High-Voltage Pulsed Radiofrequency of the Lumbar Dorsal Root Ganglion for the Treatment of Chronic Lumbar Radicular and Neuropathic Pain; A Prospective, Doble-blinded and Randomized Controlled Trial

Inclusion criteria

• Patients over 18 years of age.
• Unilateral pain radiating to the lower extremity (with or without lumbar pain), which clinically corresponds to the path of the corresponding dermatomes.
• Correlation between clinical symptoms and lesion observed by magnetic resonance imaging (MRI).
• Radicular syndrome of three months or more of evolution.
• Normal or pathological electromyogram (EMG).
• Pain with neuropathic characteristics confirmed by the DN4 neuropathic pain questionnaire.
• Patients with a previous positive block diagnosis.
• Patients who have signed the informed consent document.

Exclusion criteria

• Patients under 18 years of age.
• Patients with non-radicular low back pain.
• MRI not consistent with the patient's symptoms.
• Patients with peripheral neuropathy of the lower extremities.
• Patients with a history or current diagnosis of serious mental disorder.
• Patients with moderate or severe cognitive impairment, or evidence of acute or subacute confusional syndrome.
• Infection at the puncture site.
• Coagulation disorders.
• Pregnant patients.
• Patients who refuse to sign the informed consent document.
• Patients allergic to radiological contrast.